// page/productlist/productlist.js
Page({

    /**
     * 页面的初始数据
     */
    data: {
        baseURL: wx.baseURL,
        total: 0,
        rows: [],
        brandSelected: {'1': true},////已选品牌
        brands: [],
        brandvisible: false,
        query: {
            key: '',///搜索关键字
            brandIds: '',
            sorted: 0,
            pageNum: 1,
            pageSize: 5
        }

    },
    ////输入搜索关键字
    inputKey(e){
        this.data.query.key = e.detail.value
    },
    /////修改排序方式
    changeSorted(e){
        let sorted = e.currentTarget.dataset.sorted
        this.setData({
            'query.sorted': sorted
        })
        ////刷新
        this.refresh()
    },
    /////重新加载
    refresh(next){
        this.data.query.pageNum = 1
        this.data.rows = []
        this.data.total = 0
        this.getList(next)
    },
    getList(next) {

        wx.get('/products',this.data.query).then((res) =>{
            console.log(res)
            res.rows.forEach((item,index) => {
                item.img = wx.baseURL + item.productImgs.split(',')[0]
            })
            this.setData({
                total: res.total,
                rows:this.data.rows.concat(res.rows)
                // ...res
            })
            if(typeof next == 'function') next()
        })
    },
    toDetail(){////返回分类页
        wx.switchTab({
            url: '/page/fenlei/fenlei',
          })
    },
    detail(e){
        wx.navigateTo({
          url: '/page/productdetail/productdetail?productId=' + e.currentTarget.dataset.id,
        })
    },

    //////获取品牌列表
    getBrands(){
        wx.get('/brands').then((res) => {
            this.setData({
                brands:res
            })
        })
    },

/////清空选择品牌
    clearBrand(){
        this.setData({
            brandSelected:{}
        })
    },
/////按品牌进行搜索
    comfirmBrand(){
        let brandIds = []
        for(let key in this.data.brandSelected){///取出选中的品牌
            if(key && this.data.brandSelected[key]) brandIds.push(key)
        }
        this.data.query.brandIds = brandIds.join(',')
        this.refresh(() => {
            this.setData({
                brandVisible: false
            })
        })
    },
    /////切换品牌状态
    changeBrand(e){
        let brandSelected = this.data.brandSelected
        let id = e.currentTarget.dataset.id
        brandSelected[id] = !brandSelected[id]///取反切换选中状态
        this.setData({
            brandSelected
        })
    },

    ////切换品牌弹框
    changeBrandVisible(){
        let brandSelected = {}
        if(!this.data.brandVisible && this.data.query.brandIds){///打开品牌弹框
            let brandIds = this.data.query.brandIds.split('？')
            for(let i = 0; i < brandIds.length; i ++){
                if(!brandIds[i]) brandSelected[brandIds[i]]  = true
            }
        }
        this.setData({
            brandVisible: !this.data.brandVisible
        })
    },
    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options)  {
        console.log(options)
        this.setData({
            'query.key': options.key || '',
            'query.brandIds': options.brandIds || ''
        })
        this.getBrands()
        this.getList()

    },
    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function () {

    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function () {

    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function () {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function () {
        this.refresh(() => {
            wx.stopPullDownRefresh()
        })
    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom: function () {
        this.data.query.pageNum ++
        if(this.data.rows.length < this.data.total)  this.getList()
    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage: function () {

    }
})